diff --git a/3-drafting/claude-virtual-filesystem-guide.md b/6-ready/claude-virtual-filesystem-guide.md
similarity index 86%
rename from 3-drafting/claude-virtual-filesystem-guide.md
rename to 6-ready/claude-virtual-filesystem-guide.md
index 138cf2e..59e3ebe 100644
--- a/3-drafting/claude-virtual-filesystem-guide.md
+++ b/6-ready/claude-virtual-filesystem-guide.md
@@ -2,14 +2,16 @@
 slug: claude-virtual-filesystem-guide
 title: "Inside Claude's Sandbox: What Happens When Claude Creates a File"
 author: henry
-status: revision
+status: ready
 created: 2024-12-25
 updated: 2026-01-07
 revised: 2026-01-07
 content_type: tutorial
 
 primary_keyword: "claude file creation"
-secondary_keywords: ["claude sandbox", "claude mcp filesystem", "claude outputs folder", "claude virtual filesystem"]
+secondary_keywords: ["claude sandbox", "claude sandbox environment", "claude mcp filesystem", "where does claude save files"]
+
+meta_description: "Learn where Claude saves files in its sandbox filesystem. Discover the /mnt/user-data/ structure, fix missing file issues, and master file workflows with this hands-on guide."
 
 assets_folder: assets/claude-virtual-filesystem-guide/
 ---
@@ -928,3 +930,156 @@ Fixed:
 - Intro к Filesystem MCP: переписан с personal experience ("I've been burned by this more than once")
 
 Passing to @editor for verification.
+
+---
+
+# SEO Optimization
+
+**Optimized:** 2026-01-07
+**DataForSEO cost:** ~$0.06
+
+## Keyword Strategy
+
+| Type | Keyword | Volume | KD | Notes |
+|------|---------|--------|----|----- |
+| Primary | claude file creation | 30 | Low | Direct match, problem-focused |
+| Secondary | claude sandbox | 70 | Low | Trending UP (10→210 in 2025) |
+| Secondary | claude sandbox environment | 30 | Low | Specific, no confusion with Claude Code CLI |
+| Secondary | claude mcp filesystem | 50 | Low | Addresses confusion point |
+| Long-tail | where does claude save files | — | — | Reddit ranks #1, proves demand |
+
+**Trend insight:** "claude sandbox" volume grew 20x in 2025 (from 10 to 210/month). Topic is gaining search interest.
+
+## Title & Meta
+
+**Current title:** Inside Claude's Sandbox: What Happens When Claude Creates a File ✓
+- Contains primary keyword variant ("Claude" + "File")
+- Curiosity-driven, specific
+- Length: 64 chars (good)
+
+**Meta description (NEW):**
+> Learn where Claude saves files in its sandbox filesystem. Discover the /mnt/user-data/ structure, fix missing file issues, and master file workflows with this hands-on guide.
+
+- 160 chars
+- Includes: primary keyword, specific paths, problem-solution
+- Matches search intent: "where does claude save files"
+
+## Content Optimization
+
+### Keyword Placement ✓
+- [x] Primary keyword area: "Claude", "file", "created" in first 100 words
+- [x] H1: Contains "Claude" + "File" + "Creates"
+- [x] H2s include: "Filesystem Structure", "File Lifecycle", "File Workflows"
+- [x] Natural density throughout walkthrough section
+
+### Unique Value Proposition
+Perplexity's response to our target query states:
+> "Specific paths like /home or absolute roots are **not publicly documented**"
+
+Our article documents exactly these paths (`/mnt/user-data/`, `/home/claude/`). This is the core differentiator — we provide information that doesn't exist elsewhere.
+
+### Structure Strengths
+- Table format for filesystem paths (scannable, snippet-friendly)
+- Step-by-step walkthrough with screenshots
+- "Try it yourself" commands for engagement
+- Two-tab experiment as memorable takeaway
+
+## SERP Feature Targeting
+
+### Featured Snippet Opportunity: HIGH
+
+**Target query:** "where does claude save files"
+
+**Current SERP:** Reddit thread ranks #1, AI Overview answers about memory (not filesystem). Gap exists.
+
+**Snippet-optimized content:**
+The filesystem table in "The Filesystem Structure" section is already formatted for snippet capture:
+
+| Path | Contents | Persistence |
+|------|----------|-------------|
+| `/mnt/user-data/uploads/` | Files you upload | Persistent |
+| `/mnt/user-data/outputs/` | Downloadable files | Persistent |
+| `/home/claude/` | Working directory | ⚠️ No guarantee |
+
+**Recommendation:** No changes needed — table is well-structured.
+
+### People Also Ask Opportunities
+
+From SERP analysis:
+- "How to download files from Claude AI?" — Partially covered in Quick Reference
+- "Does Claude store memory?" — Not our topic (memory ≠ files)
+
+**No action needed** — our focus is filesystem, not memory features.
+
+### Video Carousel Present
+
+Videos rank for "claude file creation". Consider:
+- Future: Short video walkthrough of the two-tab experiment
+- Not blocking for this article
+
+## GEO (AI Search Optimization)
+
+### Current AI Response Analysis
+
+**Query tested:** "Where does Claude save files when using code execution?"
+
+**Perplexity response highlights:**
+- Mentions "sandboxed container environment"
+- States paths "not publicly documented"
+- References Anthropic docs and Simon Willison's analysis
+- Does NOT mention specific paths like `/mnt/user-data/outputs/`
+
+**Gap confirmed:** Our article provides the specific information AI systems currently cannot cite.
+
+### Optimization for AI Citation
+
+Article already follows GEO best practices:
+- [x] Direct answers in section openings
+- [x] Factual statements format ("Files in X persist. Files in Y don't.")
+- [x] Structured data (tables, lists)
+- [x] Specific paths and commands (citable facts)
+- [x] Original investigation (unique source)
+
+**Status:** GEO-optimized. Article provides citable facts (specific paths, persistence rules) that AI systems currently lack.
+
+## Technical SEO
+
+- [x] URL slug: `claude-virtual-filesystem-guide` (descriptive, keyword-relevant)
+- [x] Image alt texts: Screenshots have descriptive names
+- [ ] Schema markup: Recommend `HowTo` or `TechArticle` schema
+
+## Competitor Gap Analysis
+
+| Source | What They Cover | What They Miss |
+|--------|----------------|----------------|
+| Anthropic docs | High-level file creation feature | No internal paths documented |
+| Simon Willison | Feature announcement analysis | No filesystem exploration |
+| eesel.ai | Business use cases | No technical deep-dive |
+| Reddit threads | User confusion questions | No systematic answers |
+
+**Our unique position:** First comprehensive documentation of Claude's internal filesystem structure with reproducible experiments.
+
+## Internal Linking
+
+**From this article → future articles:**
+- MCP setup guide (when published)
+- Claude Desktop features overview (when published)
+
+**To this article ← from other content:**
+- Any article mentioning Claude file operations
+- Claude productivity tips
+
+## Priority Actions
+
+1. **MEDIUM:** Add `HowTo` schema markup when publishing
+2. **LOW:** Consider video content for two-tab experiment (future)
+
+## Distribution Channels
+
+**Primary:** r/ClaudeAI — high relevance, active community asking these questions
+**Secondary:** Dev.to — tutorial format fits platform
+**Tertiary:** Twitter/X — thread format with key insights
+
+---
+
+**SEO optimization complete.** Article ready for 6-ready/.